Tool-holder.



No. 673,743. Patented May 7, I90I.

H. c. WARREN.

TOOL HOLDER.

(Agplcation Bled Nov. 24, 1900.) (N u NI o d el Tulum /uuliiiiisgjw I Fg- 5 a 9 Fig; 6. j

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f @ff/@5f UNTTnn STATES PATENT OFFICE.

HERBERT C. VARREN, OF HARTFORD, CONNECTICUT.

TOOL-HOLDER.

SFECIFICATION forming Dart 0f Letters Patent No. 673,743, dated May 7, 1901.

application filed November 24, 1900. Serial No. 37,669. tNo monat-1 To all whom, t may concern:

Be it known that I, HERBERT C. WARREN, a citizen of the United States of America, and a resident of the city and county of Hartford, in the State of Connecticut, haveinvented certain new and useful Improvements in Tool- Holders, of which the following is a specification.

This invention relates in a general Way to a tool-holder, and more specically to the tool supporting and adjusting means which constitutes a part of vsaid holder and which is separately applicable as an attachment to the tool-post of any ordinary tool-holding device.

An object of the present invention is to produce an improved, simpliiied,durable, and efficient tool-holder comprehending means whereby on a simple rotation of one member with relation to another the tool may be readilyand quicklyadj usted to any predetermined position without disturbing the cutting angle of the tool and may be locked in such adjusted position.

A further object of the invention is to provide, either as an element of or as an attachment to a tool-holder, tool supporting and adjusting means, including two relatively rotative tool-adjusting members having coperative cam-faces so disposed with respect to each other that on a rotation of one member with relation to the other a tool-adjusting movement will be imparted to one member in parallel lines and in the plane of the axis of rotation of the other member, and means in connection with and effective for holding the two members in locked engagement as against accidental rotation.

A further object of the invention is to provide an improved tool-holder comprising a tool-post having a longitudinal tool-receiving opening, two relatively rotative tool-adjust ing members, one of which is in the naturel adjusted longitudinally of the tool-post, and both of which members have cooperative locking-faces tapered on opposite sides to facilitate rotation of one member with respect to the other in either direction, means for limiting the rotative movements of said members in both directions, and dust-excluding means in connection with said members.

With these objects in view the invention consists in certain novel element-ary features and in the specific construction and organization of the several parts of the tool holding and adjusting device, subst-antially as hereafter described,and more particularly pointed out in the claims.

In the drawings accompanying and forming part of this specification, Figure lis a perspective View of a tool holding and adjusting device embodying my present invention in one construct-ion and organization thereof, a portion of the dust-cap being broken away and the slide-rest being omitted. Fig. 2 is a central vertical section of the tool holding and adjusting device, showing the same in connection with the slide-rest, a portion only of which is shown. Fig. 3 is a plan View of one-half of the rotative adjusting member. Fig. 4 is an edge View of the part shown in Fig. 3. Figs. 5 and 6 are edge and sectional views, respectively,of the tool-elevating member; and Figs. 7 and 8 are plan and crosssectional views, respectively, of the d ust-cap.

Similar characters indicate like parts in all the figures of the drawings.

As a preamble to a detailed description of the several parts of the device constituting the subject-matter of this invention, it is desired to say that certain tool-adjusting elements (shown in connection with other toolholding elements of Figs. l and 2 of the drawings) are applicable as attachments to various kinds of tool-posts, tools, and slide-rests, and for this reason those elements which directly control the vertical adjustment of the tool Vmay be herein referred to, collectively, as the tool-adjusting means and those elements-such as the tool-posts, slide-rest, and adjusting screw- Which are ordinarily used alone for holding the tool may be hereinafter referred to, collectively, as the tool-holding means, notwithstanding the fact that in the organization thereof shown in Figs. 1 and 2 IOO of the drawings the entire device constitutes what is known in the art as a tool-holder and the tool-adjusting means is a functional assistant of the tool-holding means.

In the form thereof shown most clearly in Fig. 2 the tool-holding means proper comprises the slide-rest B, which may be of any ordinary construction and which has an inverted-T-shaped way or groove 2 for receiving the lower flanged end of the tool-post, the tool-post C, having the usual longitudinal tool-receiving slot 3, and the clamping means D, which is shown as a set-screw having a screw-threaded bearing in the upper end of said tool-post, all of which parts may be of any suitable or usual construction.

The tool-adjusting means per se, in the preferred construction and organization thereof shown in the accompanying drawings, comprises what may be consistently termed two relatively rotative adjusting members (designated in a general way by E and F, re-

spectively) and incidentally a dust-eap, (designated in a general way by G.) One ofthe adjusting members, as E, is shown in the nature of an elongated angular tool-supporting block of a width substantially equal to the width of the slot in the tool-post through which it is adapted to extend, as shown in Fig. 1 and which has plane upper bearingfaces for the tool T. This tool-supporting block is shown having two oppositely-disposed spiral or cam faces 4 and 5, preferably ofthe same thickness and pitch, which in one form thereof shown inthe accompanying drawings are grooved radially to form locking elements or teeth 6, the opposite faces of each of which are preferably inclined inward toward the point for the purpose hereinafter described. The other adjusting member, as F, is shown as an axially-recessed disk or annulus having an annular flange 7 at the outer edge, concentric to the axis thereof, and also having two substantially semicircular opposing spiral or cam faces or portions 8 and 9, preferably of the same thickness and pitch, confined by and disposed below the upper edge of the flange 7, the highest part of one spiral face being disposed adjacent the lowest part of the other face, and vice versa, and which faces are shown having radial V shaped grooves formed therein to provide locking elements or teeth l0, corresponding to and coperating with the locking elements or teeth b ofthe tool-supporting block F.. This adjusting member, which will ordinarily constitute the rotative member, is shown having an undulated peripheral edge to enable the same to be readily turned. rlhe annular flange 7 of the member F constitutes a means independent of the toolpost for holding the member E against longitudinal displacement or against movement transversely of the toolpost and member F, said member E being of a length to t between diametrically opposite portions of the inner face of said flange and having its ends curved to conform to the ever/4e arc of said face. Other means for accomplishing this purpose may be substituted for the flange, if desired.

The cooperative spiral faces of the me'mbers E and F are so constructed and disposed that on a movement of one member with relation to the other one member will have a movement toward and away from the other in parallel lines and in the plane of the axis of rotation of the rotative member, and the successive locking elements of each member, which are in the present instance shown locat-ed on and constituting a part of the spiral faces of said member, will in practice be so disposed in graduated order with respect to the range of rotative movement of the rotative member as to constitute an index for accurately determiningthe successive positions or distances of vertical adjustment of the tool-supporting member, the successive locking elements of the adjusting member being disposed in aliquot relation with respect to the range of rotative movement of the adjusting member and at predetermined relative distances, governed by the pitch of the spiral face of said member, whereby at each rotative movement of the adjusting member a distance equal to the distance between centers of two adjacent locking elements the toolsupporting block will be lifted or lowered a predetermined distance.

The dust-cap G is shown as an axially-recessed disk having a parti-annular upturned ange 12 at its inner edge, adapted for frictionally engaging the tool-post, and having at the outer edge thereof a depending ange 13, adapted for overlapping the outer edge of the flange 7 of the rotative ladjusting member F, said dust-cap also having an oblong transverse slot 14 formed in the upper wall thereof, which extends from points near opposite outer edges to the inner edge thereof, the side edges of which slot engage and constitute guiding-faces for the tool-supporting block E.

In the accompanying drawings the locking meansthe locking elements or teeth-is shown constituting a part of the two members E and F; but it is distinctly to be understood that the invention is not limited to the specific construction and organization ot' locking means between two adjusting members shown, as these are subject to various' modifications within the purview of this invention.

In the organization thereof shown in Figs. l and 2 the rotative adjust-ing member F surrounds and is rotative about the tool-post C and has a plane lower bearing-face resting upon the corresponding upper face of the slide-rest. The toolsupporting block eX- tends through the slot in the tool-post and has its spiral faces in superimposed relation with the spiral faces of the rotative adjusting member and is held as against rotative movement with respect to the tool-post. Tool T extends through the slot in the tool-post IOO and is supported upon the upper face of the block. The dust-cap G is superimposed with relation to the rotative member F intermediate said member and tool T, with the guiding-faces of its transverse slot in engagement with said tool-supporting block, and all of the parts are clamped together against movement by the clamping means or adjustingscrew D.

For the purpose of limiting the maximum rotative movement of the member F,and consequently the maximum vertical adjustment of the tool-supporting block E, l have provided adjustment-limitingmeans, shown consisting of a stop l5, disposed on the rotative member near the higher end of one of the spiral faces thereof, and a cooperative stopabutment 16, disposed on the capin the path of movement of the stop l5.

It is not desired to limit the invention to the particular construction and organization of the adjustment-limiting means shown in the accompanying drawings, as these may be variously modified Without departure from this invention.

By providing the locking elements which hold the two adjusting members against accidental rotative movement relatively with oppositel'y-inclined faces one set of locking elements will readily ride over the other set during the rotative movements of the adjusting member, not meeting with any obstructions, as would be the case were said elements constructed as ordinary ratchet-teeth.

It will be understood that the tool-adjusting means will be operative if the cap G is dispensed with, but that it is advantageous to employ said cap as a means for excluding dust.

I claiml. Thecombination withaslotted tool-post, of two relatively rotative members having eooperative serrated or toothed spiral faces and one of which members surrounds the toolpost and has an annular flange for holding the other member against movement transversely of the axis of the tool-post.

2. A toolholder including an axiallyrecessed adjusting member having an annular flange and also having two spiral faces confined by, and located below the edge face of, said flange; and an elongated tool-supporting block having oppositely-disposed spiral faces cooperative with the spiral faces of said adjusting member and disposed with its outer ends between diametrically opposite inner face portions of said flange, whereby said block is held againstmovement transversely of the adjusting member.

3. A toolholder including an axially recessed adjusting member having an annular flange and also having two spiral faces confined by, and located below the edge face of, said flange; an elongated tool -supporting block having oppositely-disposed spiral faces cooperative with the spiralfaces of saidadj usting member and disposed with its outer ends between diametrically oppositeiinner face portions of said flange, whereby said block is held against movement transversely of the adjusting member; and means intermediate the adjusting member and block for lock- -ing the same against relative rotative movement.

4. A toolholder including an axially -recessed adjusting member having an annular flange, and also having two spiral faces confined by, and located below the edge face of, said flange; an elongated toolsupporting block having oppositely-disposed spiral faces coperative with the spiral faces of said adjusting member; means for locking the adjusting'member and block against relative rotative movements; and an axially-recessed dustcap covering the upper face of the flanged member and having an elongated block-guiding groove through the upper wall thereof.

5. The combination with aslotted tool-post, of two relatively rotative members one of which surrounds said post and both of which have cooperative serrated or toothed spiral faces; means independent of the tool-post for holding one member against movement transversely of the other; and means, independent of the toothed spiral faces, for limiting the rotative movement of one member with respect to the other.

6. In a tool-holder, a tool-adjusting annulns having opposing substantially semicircular spiral faces; a tool-supporting member having spiral faces cooperative with the spiral faces of the adjusting member; an annular dust-cap superimposed with respect to the adjusting member and having a guiding-slot for the tool-supporting member; and coperative stops on the adjusting member and cap for limiting the rotative movement of the adjusting member.

7. Atool holding and adjusting device comprising a slide-rest havinga tool-post-receiving way; a slotted tool-post having its lower end adj ustably seated in said way; an annular tool-adjusting member surrounding the tool-post and having a plane face resting upon the slide-rest and also having two opposing substantially semicircularspiral cam portions surrounding the tool-post; a tool-supporting block extending through the tool-post and having opposite spiral cam portions engaging the cam portions of the adjusting member; means independent of the tool-post for holding the block against movement transversely of the tool-adjusting member; va tool extending through the tool-post and supported upon the upper face of the block; and a set-screw extending into the upper end of the tool-post and adapted to clamp the tool-supporting block and adjusting member together and also bind the tool-post in the slideway.

8. Atool holdingand adjustingdevice comprising a slide-rest having a tool-post-receiving way; a slotted tool-post having its lower end adjustably seated in said way; an annu- IOO TIO

l lower face of the tool and having a transverse slot to facilitate movements of the supporting-block therethrough; and an adjustingscrew in connection With the tool-post and elective for clamping the parts together.

9. The combination with a tool-post of two relatively rotative members one of which eX- tends through, and the other of which surrounds, said post and both of which have cooperative cam-faces adapted, on the rotation of one member, for moving the other meinber longitudinally of the post; locking means in connection with said members and adapted normally for preventing rotative movements thereof; an axially-recessed cap superimposed With relation to one member and having a flange frictionally engaging the toolpost and vvalso having a guiding-slot in which the other member is seated; and means for limiting the rotative movement of one member with respect to the other.

10. The combination, with a slotted toolpost and With a tool supported for vertical adjustment therein, of atool-post-supporting block and a block-adjusting member having cooperative cam-faces for effecting an adjustment of the tool; and a dust-cap interposed between the adjusting member and tool and including means for preventing a rotative ymovement thereof with respect to said block.

1l. The combination, With a tool-post, and with a tool carried thereby, of a device for supporting the tool; means for preventing endwise movement of said device, said Adevice having serrations on its under side; and a rotary device having an inclined, serrated surface directly in contact with the serrations on the tool-supporting device.

12. The combination, With a slotted toolpost, of a tool mounted in said post; a bar upon Which the tool is supported, said bar having a serrated portion on its under side; means for preventing endWise movement of said bar; and a rotatable device having an inclined, serrated surface directly in contact With the bar.

13. The combination, With a slotted toolpost, of a tool located in the slot of said post; a bar having inclined, serrated, spiral surfaces at its ends on its under side; a rotatable disk having an inclined serrated surface on its upper side directly in contact With the serrated surfaces of said bar; and an adjustable device against which the bar is forced by the disk.

14. The combination, With a tool-post carrying means for clampingatool, of a serrated tool-sustaining device; serrated means for forcing said device against the tool; and a cap for protecting said means from the entrance of dust.

15. The combination, with a slotted toolpost, of aserrated tool-supporting bar mounted in the slot of said post; a serrated device for forcing said bar against the tool; and a dust-excluding cap fitted over the tool-post and having an opening through which the tool-sustaining bar passes.

16. The combination, with a slot-ted toolpost, of a tool supported in the slot of said' post; a bar having an inclined, serrated surface at each. end on its under side; means for preventing endwise movement of said bar; anda disk, fitted over the tool-post and having an inclined, serrated surface in direct contact with the serrations of the bar, and also having a grasping-surface on its periphery.

17. The combination, With a tool-post, of a tool mounted on said post; a tool-supporting bar having serrations on its under side; means for preventing end Wise movement of said bar; and a device having a serrated upper surface in direct engagement with the serrations of the bar, one of said parts being revoluble with relation to the other.

Signed by me at Hartford, Connecticut, this 22d day of November, A. D. 1900.

HERBERT C. WARREN. v Witnesses:

L. C. Woon, E. C. WHITNEY. 

